Form or joint pin



C- H. RUE

FORM OR JOINT PIN Filed July 17 1925 Nov 23 Q1926.

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ATTORNEY Patented Nov. 23, 1926.

UNITED STATES PATENT FHCE.

CHARLES H. RUE, OF TREIZ'TON, NEW JERSEY, ASEIG-NGR OF OI'IEJ'ZALF TOEDVR ARD J. HUNT, OF ALBANY, NE'W YORK.

FORM OR JOINT PIN.

Application filed July 17, 1925.

My invention relates to pins or stakes and particularly to pins of thetype adapted to be driven into the ground for the purpose of holding aform or joint rigidly in place during the operation of pouring concreteadjacent thereto.

My device is particularly adapted for temporarily securing in place theexpansion joints used in concrete highway construction, and its primaryobjects are to provide a de vice of this character which may be cheaplymanufactured, which will be of such strength and rigidity as to precludeany deformation in driving, which will be adapted to penetrate asubgrade of almost any character, which may be easily withdrawn withoutthe use of tools of any character, and which will hold the form or jointexactly in place.

With these objects in view my invention consists in the device shown inthe accompanying drawing in which- Fig. l is a view of my pin showinghow it is driven into the ground and embraces the form or joint which isshown in cross section;

Fig. 2 is a view of my pin at right angles to the position shown in Fig1;

Fig. 3 is a perspective view of my pin showing a fragmentary portion ofan em pansion joint or form.

Referring to the drawing my device comprises a member, 1, of iron orsteel, preferably circular in cross section and about 17 to 20 long. Themember, 1, should be fairly large in cross section so that it will notbe deformed when driven into a hard subgrade such as old concrete ormacadam. In practice I find that pins fabricated from round stock arevery satisfactory. The lower end of the member, 1, is pointed as shownat 2, to facilitate driving. Welded to the side of member. 1, at a.point, 3, somewhat below the topthereof, is the form engaging member, l,disposed in parallel relation to member, 1, and offset therefrom adistance substantially equal to the thickness of the form or joint, 7,to be used with the pin. The member, 4, may, of course, be much lighterthan member, 1, and I find that round stock is very satisfactory. Tofacilitate the entrance of the joint into the space thus providedbetween the member, 1, and the member, 4, the lower end of the member,

Serial No. 44,382.

at, curves slightly away from member, 1, as shown at 5. The length ofthe member, 4, may be varied according to the height of the form orjoint to beused but should be somewhat less than the height of the jointso that the lower end of member, 4;, is somewhat above the subgrade, 6.The distance of the point, 8, at which the members are welded together.below the top of member, 1, may be varied, but it should be suliicientto provide a hand-grip above the top of the concrete which is usuallycoincident with the top of the form or joint, 7.

VJhile I have described my device in considerable detail I do not wishto be limited to the precise features described, and it is to beunderstood that the words which I have used are words of description andnot of limitation, and that changes within the purview of the followingclaims may be made without departing from the spirit and scope of myinvention.

What I claim is:

1. A form or joint pin of thecharacter described comprising a straightmember adapted to be driven into a hard subgrade, and a form embracingmember disposed substantially parallel to said first member; theembracing member being integral with and offset from the first member ata point intermediate the ends of said first mentioned member.

2. A form or joint pin comprising a straight member of substantial sizeand rigidity adapted to be driven into a hard subgrade withoutdeformation, and a comparatively light, hook-like member integral withthe first mentioned member and adapted to fit over the top edgeof anexpansion joint.

3. A form or joint pin comprising a short and comparatively heavy memberadapted to be driven into a hard subgrade without deformation, and amember integral with and offset from the driven member adapted to fitover the top edge of a. form or joint; a portion of the driven memberextending slightly above the second mentioned member to provide a handgrip for pulling the pin.

4;. A form or joint pin comprising a comparatively heavy pointed memberadapted to be driven into a hard subgrade without deformation, and amember integral with,

the driven member at a point intermediate its ends and adapted to fitover the top edge of and lie closely against a side of a form or jointto hold s aid form or joint against the first mentioned member.

5. A form or joint pin of the character described provided With aU-shaped, fornienibraoing portion adapted to fit over the top edge of aform and having a portion eX- tending beyond the formembracing portionto provide :1 hand-grip.

6. A form or joint pin comprising an in verted U-shaped member adaptedto fit over the top edge of a form; one of the sides of the U beinglonger than the other and adapted to be driven into the ground.

CHARLES H. RUE.

